﻿//
//  HFParamsRSAEncryptUtil.m
//  HFMiddleLibModule
//
//  Created by Sauseon on 2021/8/9.
//  Copyright © 2021 hfqf123@126.com. All rights reserved.
//

#import "HFParamsRSAEncryptUtil.h"
#import "HFSecurity.h"
#import <MJExtension/MJExtension.h>
#import "HFHttpLJCFactory.h"

@implementation HFParamsRSAEncryptUtil

+ (HFParamsRSAEncryptUtil *)paramsRSAEncryptUtil{
    HFParamsRSAEncryptUtil *instance = [[HFParamsRSAEncryptUtil alloc] init];
    return instance;
}


- (NSString *)urlEncode:(NSString *)url{
    // CharactersToBeEscaped = @":/?&=;+!@#$()~',*";
    // CharactersToLeaveUnescaped = @"[].";
    NSString *unencodedString = url;
    NSString *encodedString = (NSString *)
    CFBridgingRelease(CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault,
                                                              (CFStringRef)unencodedString,
                                                              NULL,
                                                              (CFStringRef)@"!*'();:@&=+$,/?%#[]",
                                                              kCFStringEncodingUTF8));
    return encodedString;
}

- (NSDictionary *)encryptParams:(NSDictionary *)params{
    // 参数转换成json字符串
    NSString *jsonString = [params mj_JSONString];
    
    NSString *key = [HFSecurity randomAESKey];
    
    
    NSString *rsaKy = RSA_PUBLICKEY_DIS;
    NSString *bundlId = [[NSBundle mainBundle] bundleIdentifier];
    if ([bundlId containsString:@"copy"]) {
        NSString *cacheString = [[NSUserDefaults standardUserDefaults] objectForKey:@"RSA_CACHE_URL"];
        if (![cacheString containsString:SERVER_PRODUCT_DOMAIN]) {
            // 测试
            rsaKy = RSA_PUBLICKEY_CS;
        }
     
    }
    // RSA加密v3
    NSString *v3Rsa = [HFSecurity rsaEncryptString:key publicKey:rsaKy];
    
    NSString *rsaResultString = [HFSecurity aes256StringEncryptWithString:jsonString key:key];
    
    //组装请求参数
    NSDictionary *requestParams = @{@"v1":RSA_VERSION,
                                    @"v2":rsaResultString?rsaResultString:@"",
                                    @"v3":v3Rsa?v3Rsa:@""
                                    
    };

    return requestParams;
}


- (NSString *)base64Dencode:(NSString *)data{
    if (!data) {
        return nil;
    }
    NSData *sData = [[NSData alloc]initWithBase64EncodedString:data options:NSDataBase64DecodingIgnoreUnknownCharacters];
    NSString *dataString = [[NSString alloc]initWithData:sData encoding:NSUTF8StringEncoding];
    return dataString;
}

- (NSString *)dataFromHexString:(NSString *)hexStr
{
    if (hexStr.length%2 != 0) {
        return nil;
    }
    NSMutableData *data = [[NSMutableData alloc] init];
    for (int i = 0 ; i<hexStr.length/2; i++) {
        NSString *str = [hexStr substringWithRange:NSMakeRange(i*2,2)];
        NSScanner *scanner = [NSScanner scannerWithString:str];
        int intValue;
        [scanner scanInt:&intValue];
        [data appendBytes:&intValue length:1];
    }
   
    return [self base64Encode:data];
}

- (NSString*) base64Encode:(NSData *)data
{
    static char base64EncodingTable[64] = {
        'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P',
        'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f',
        'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v',
        'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '/'
    };
    int length = [data length];
    unsigned long ixtext, lentext;
    long ctremaining;
    unsigned char input[3], output[4];
    short i, charsonline = 0, ctcopy;
    const unsigned char *raw;
    NSMutableString *result;
    
    lentext = [data length];
    if (lentext < 1)
        return @"";
    result = [NSMutableString stringWithCapacity: lentext];
    raw = [data bytes];
    ixtext = 0;
    
    while (true) {
        ctremaining = lentext - ixtext;
        if (ctremaining <= 0)
            break;
        for (i = 0; i < 3; i++) {
            unsigned long ix = ixtext + i;
            if (ix < lentext)
                input[i] = raw[ix];
            else
                input[i] = 0;
        }
        output[0] = (input[0] & 0xFC) >> 2;
        output[1] = ((input[0] & 0x03) << 4) | ((input[1] & 0xF0) >> 4);
        output[2] = ((input[1] & 0x0F) << 2) | ((input[2] & 0xC0) >> 6);
        output[3] = input[2] & 0x3F;
        ctcopy = 4;
        switch (ctremaining) {
            case 1:
                ctcopy = 2;
                break;
            case 2:
                ctcopy = 3;
                break;
        }
        
        for (i = 0; i < ctcopy; i++)
            [result appendString: [NSString stringWithFormat: @"%c", base64EncodingTable[output[i]]]];
        
        for (i = ctcopy; i < 4; i++)
            [result appendString: @"="];
        
        ixtext += 3;
        charsonline += 4;
        
        if ((length > 0) && (charsonline >= length))
            charsonline = 0;
    }
    return result;
}

@end

